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Proceedings Paper

Real-Time Moire Holography
Author(s): O. D. D. Soares; A. I. V. S. Lage
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Paper Abstract

Interferometric techniques including hologrametry, both classical and electronic, present high sensitivity making difficult its practical use in real-time. The introduction of the differencial concept as moire evaluation techniques permits to use with advantage an arbitrary reference pattern within the correlation range. The carrier spatial spectrum can be directly the interferogram fringe pattern instead of the original interference pattern of wavelength dimensional scale. A moire techniques is in itself an optical processing method reducing evaluation time which is advantageous when real-time response is desired from hybrid metrological systems. The moire evaluation is performed via a dynamical digital memory that executes arithmetic operations on two frames temporally in sequence, at TV rate. These characteristics of the moire evaluation techniques can be implemented on a real-time holographic (or speckle based) hybrid system with great practical advantage for dynamical studies.

Paper Details

Date Published: 20 August 1986
PDF: 8 pages
Proc. SPIE 0615, Practical Holography, (20 August 1986); doi: 10.1117/12.961027
Show Author Affiliations
O. D. D. Soares, Universtdade do Porto (Portugal)
A. I. V. S. Lage, Universtdade do Porto (Portugal)


Published in SPIE Proceedings Vol. 0615:
Practical Holography
Tung H. Jeong; Jacques E. Ludman, Editor(s)

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